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4045 Aluminum vs. ASTM B522 Class II

4045 aluminum belongs to the aluminum alloys classification, while ASTM B522 class II belongs to the otherwise unclassified metals. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 4045 aluminum and the bottom bar is ASTM B522 class II.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
96
Elongation at Break, % 2.3
1.1 to 28
Poisson's Ratio 0.33
0.41
Shear Modulus, GPa 27
34
Shear Strength, MPa 69
180 to 280
Tensile Strength: Ultimate (UTS), MPa 120
280 to 490
Tensile Strength: Yield (Proof), MPa 64
120 to 210

Thermal Properties

Latent Heat of Fusion, J/g 540
77
Melting Completion (Liquidus), °C 600
1030
Melting Onset (Solidus), °C 580
1030
Specific Heat Capacity, J/kg-K 900
160
Thermal Expansion, µm/m-K 21
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
11
Electrical Conductivity: Equal Weight (Specific), % IACS 160
5.7

Otherwise Unclassified Properties

Density, g/cm3 2.6
17

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.4
4.4 to 63
Resilience: Unit (Modulus of Resilience), kJ/m3 29
75 to 230
Stiffness to Weight: Axial, points 15
3.1
Stiffness to Weight: Bending, points 54
8.9
Strength to Weight: Axial, points 13
4.4 to 7.8
Strength to Weight: Bending, points 21
5.5 to 8.0
Thermal Shock Resistance, points 5.7
13 to 24

Alloy Composition

Aluminum (Al), % 87.4 to 91
0
Copper (Cu), % 0 to 0.3
0
Gold (Au), % 0
68.5 to 69.5
Iron (Fe), % 0 to 0.8
0
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0
Platinum (Pt), % 0
5.5 to 6.5
Silicon (Si), % 9.0 to 11
0
Silver (Ag), % 0
24.5 to 25.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0
0 to 0.26